Integration 2026 week 04

* !3787 CI: disable aerial x86 build pipeline
* !3820 Integrate F1AP messages required for NRPPa
* !3789 fix A3 event configuration
* !3861 add a csv T tracer
* !3669 NR UE: add neighboring cell measurements and measurement report of event A3
* !3866 nr-softmodem: ensure RU is ready before L1 init in NFAPI PNF mode
* !3402 Test FDM PRACH in CI
* !3852 Cleanup nr_slot_fep_ul
* !3782 Improvements to support CSET0 multiplexing pattern 3 for FR2
* !3862 Check for PDSCH overlapping CORESET during RA
* !3430 NR gNB handling TCI state indication for beam switching
* !3872 Fix compilation issues with vrtsim taps client
* !3687 Standardize Documentation Formatting and Navigation for MkDocs